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v 8 Sheets-Sheet '1. D. STRUNK. Grain-Binder. No. 223,773. Patented Jan.20,1880

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No. 223,773. V

D. S-TRUNK.

Grain-Binder.

Patented Jan. 20, 1880 8 Sheefs'-Sheet 2.

INVENTOH. 1

D an 2' e? SZrun'Z" r if flier-72 cys- I UNITED I STATES PATENT OFFICE.

DANIEL STRUNK, OF JANESVILLE, WISCONSIN, ASSIGNOR OF ONE-HALF OF HISRIGHT TO JAMES B. CROSBY, OF SAME PLACE.

GRAlN-BlNDER.

SPECIFICATION forming part of Letters Patent No. 223,773, dated January20, 1880.

Application filed February 27, 1878.

To all whom it may concern Be it known that I, DANIEL STRUNK, ofJanesville, in the county of Rock and State of Wisconsin, have inventeda new and useful Improvement in Grain-Binders, which is fully describedin the following specification, reference beinghad to the accompanyingdrawings, in which- Figure 1 represents arear side elevation of agrain-binder embodying my improvements; Fig.2, a plan view of the same;Fig. 3, a detail section of the pitman-connection Fig. 4, a sideelevation of the binder, looking from the front of the harvester; Fig.5, afront elevation of the binder; Fig. 6, a detail perspective of thehead of the binding-arm and twister-hook on an enlarged scale; Fig. 7,an elevation of the cam and switches for guiding the binding-arm; Fig.8, a rear end elevation of the binder;

Fig. 9, a vertical section, on an enlarged scale, through the tensiondevice and spool-holder; Fig. 10, a detail plan view, on an enlargedscale, of the wire-cutter and bundle-discharger; Fig. 11, a similarelevation of the twister-hook 2 5 and incline by its side; Fig. 12, asimilar perspective of a portion of the cutter and its connecting-rod.

My invention relates to that class of automatic grain-binders in which avibrating bind- 0 ing-arm is used, and in which the binding material iswire.

The invention consists in the combination of a jointed vibratingbindingarm, a rockshaft, and mechanism for controlling the outer 3 5 endof the binding-arm, whereby it is caused to move indifferent paths asthe binding-arm is vibrated.

It also consists in various combinations of devices, all of which willbe hereinafter more 0 fully described, and pointed out definitely in theclaims.

In the drawings, A represents the grain-receiver, which is provided.with a slot, to, to accommodate the movement of the binding-arm 4 5 andthe bnndle-discharger.

A suitable frame, 13, is provided for the mounting and support of theoperative parts of the binding mechanism, theupper part, b, of whichprojects inward over the receiver.

A shaft, 0, is mounted on this upper projecting arm, I), to the innerend of which is attached the binding-arm D. This binding-arm is made oftwo parts, pivoted together, so as to constitute a jointed binding-arm.The head portion is the longer, and is constructed with aheel-extension, d, which projects back over the other section of thearm, as shown in Fig.

4 of the drawings, and on its extreme rear is a pin, d. A cam, E, isalso attached to the inner 6o end of the frame-piece b, and arranged sothat the pin 61 on the binding-arm will enter the cam-groove c in theinner face of the cam. This groove is of the shape shown in Fig. 7 ofthe drawings, one section running around near 65 the outer edge of thecam, the two extremities being joined by a section made on a longercurve.

Spring-switches e are attached to the cam and arranged in thecam-groove, one at each junction of the two sections thereof.

On the outer end of the shaft G is a crank,

c, which is connected, bya pitman, G, with one of the wheels of the maingearing of the binder. The crank c is provided with a slot,

c, and the pitman is connected thereto by means of a pin, 0 which isinserted in the crank-slot, being held in place by a nut, and isadjusted, to regulate the throw of the crank, by means of a set-screw,as shown in Fig. 3 of the drawings.

Aspring, F, is attached at one end to a suitable support, F, arranged atany convenient place on the machine. Theupper end of the spring is leftfree, and is provided with an arm or plate, f, on which is mounted thespool of band-wire f.

It is evident, therefore, that the support of the spool is elastic, anda screw, f inserted in the spring-support F opposite to the spring, 0provides a means for adjusting the elastic spool-standard, for it isevident that by turning the screw the distance to which the spring maybe drawn inward may be nicely regulated, and the construction andarrangement 5 of the spring are such that its elasticity will alwaysthrow it out from the screw-pin whenever freed from restraint.

The wire running from the spool passes around a tension device, which isalso mounted roo on the elastic spool-support. It consists of a plainsheave, G, mounted loosely on a pin, 9, attached to the support and heldbetween loose plates g, above the upper one of which is a spring, 9 thetension of which may be adjusted by means of a nut, 1 on the upper endof the pin, thereby regulating the bearin gforce of the clamping-plateupon the sheave,

' preferably the former.

inent of this device the wire is liable to coil so low down upon theshank of the hook that it will not readily slip up. To avoid this Iprovide an incline or cam, H, raised on the table, in rear of thetwister-hook, and extending forward on both sides of the latter, asshown in Fig. 11 of the drawings, being inclined in the same direction.

This device also prevents the refuse coils or out ends of the same frombecoming tangled with the band-wire when the twisting commences, so asto interfere with the proper operation of the hook and discharge ofrefuse coil.

The manner in which the band is secured by thetwister-hook after thedelivery of the second strand .of wire to it by the bindinghead is wellknown, and does not require description here.

The movement of the parts is so timed that the binding-arm is stoppedand held in an elevated position, about as shown in full lines in Fig.at of the drawings, the pin on the heelextension being in the innerportion of the cam-groove e. At the proper time the movement of thecrank-shaft O is commenced, by means of which the binder-arm is vibrateddownward. It is evident that without the pin and groove the binding-arm,during this movement, will be, to all intents and purposes, a rigid arm,the heel-extension resting upon the upper section of the arm.

When the binding-arm has reached the limit of its downward stroke anddelivered the wire to the twister the pin d has passed to the extremelower end of the cam-groove andoutside of the lower switch, 6, whichcloses behind it in the position shown in Fig. 7 of the drawings. Whenthe upward vibration of the arm commences it is evident that as the pincannot enter the inner groove of the cam, it

must follow the outside one, thereby flexing the arm in such a manner asto liftthe head immediately from the wire and above the grain which isbeing delivered to the receiver.

It is evident, therefore, that there will be no deflection of the wireduring the return stroke of the arm. The upward movement of the arm-iscontinued until the pin (1 reaches the upper extremity of the outercam-groove and passes the upper switch, 0, as shown in dotted lines inFig. 4, when it starts in the opposite direction, the pin being nowforced into the inner groove, and stops in the position shown in fulllines, as heretofore mentioned.

The path of the binder-head is in the arc ofa true circle, and'thetwister is located almost directly underneath the axis of the bindingarmhence the binder-head will stop in its downward movement at itslowestdescent, and consequently there will be no slack wire to take up,resulting from the downward stroke of the arm. If, however, through lackof nice adjustment or perfect working of the parts, there should be aslight slack produced, it will all be taken up by the recoil of thespring-support of the spool, which is drawn up against the adjusting-pinwhen the wireis put around the bundle. The band-wire will thus always bekept taut.

A band-cutter, I, is pivoted to the supporting frame or table by a pin,6, as shown in Fig. 10 of the drawings. This cutter is of peculiar form,as shown in the drawings mentioned, being curved and then bent at itsouter end, which is the cutting-edge t", so that the latter will benearly in line with the pivot, and, when the cutter is vibrated to bringthe edge against the stationary cutter I, on line nearly at right anglesto the direction of the wire, .as shown in dotted lines of Fig. 10.

The knife is extended in rear and at the side of the pivot, and thishead-extension is hinged to a connecting-rod, J, the other end of whichis hinged to a strap, K, on an eccentric, k, on the shaft L. From thisconstruction and arrangement of the cutter the latter is caused to swingback or sidewise entirely out of the way of the wire and twister afterit has cut the twist.

The, shaft L is geared to the main driving mechanism, and carries uponits inner end an arm, M, which is fastened thereto. The shaft isarranged so that this arm is in line with the slot in thereceiving-table, through which it is projected by the revolution of theshaft, the arrangement being such, also, that the arm comes up behindthe bundle-and pushes it off from the table after it is bound.

The mechanism for operating the different parts is timed so that whenthe twister stops after twisting the band the shaft L commences torotate, thereby vibrating the knife to cut IIO the band, and therelative arrangement of the eccentric on this shaft and the discharger Mis such that the latter is brought up behind the bundle to discharge itfrom the table just after the band is cut, and is stopped in a verticalposition above the shaft, and serves as a stop against which the bundlemay be compressed.

jointed arm and cam-guide in my improvement remove this difficultyentirely, and enable me to use a fixed support for the bindingarmwithout the necessity of making the latter rotating. I

The operation of my improvements has been set forth in the descriptionabove, and does not require repetition; and the advantages derived frommyimprovements have also been set forth in connection with theexplanation of their construction and operation.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1. In a grain-binder, a vibrating jointed binding-arm composed of twosections hinged or pivoted together, in combination with arockshaft andmechanism whereby the bindinghead or outer section is caused to move indifferent paths as it vibrates and is lifted from the wire and above thegrain upon its return or backward stroke, substantially as described.

2. The vibrating jointed binding-arm D, provided with a guiding-pin, d,in combination with the cam E and rock-shaft G, whereby the binding-headis moved in diflerent paths. on its upward and downward strokes and islifted from the wire, substantially as described.

3. The rock-shaft O, in combination with the jointed binding-arm D,attached thereto, and provided with a pin, 01, on the heel-extension ofthe lower section, and the cam E, having a groove, 0, in its innersurface, provided with spring-switches a, substantially as described.

4. An elastic support on which the bandspool is mounted, in combinationwith a device Whereby the movement of the yielding support is adjusted,substantially as described.

5. The spool-supporting spring F, in combination with theadjusting-sorew'f substantially as and for the purpose set forth.

6. The cam or incline H, arranged in rear and at the sides of thetwister-hook, substan tially as and for the purpose set forth.

7. The pivoted knife I, in combination with the eccentric k,eccentric-strap K, and connect-

